Skills

Skills are attributes belonging to Crew members. Each character is proficient in at least one skill. These are:
 * Command
 * Diplomacy
 * Engineering
 * Security
 * Science
 * Medicine

A skill level has 2 components:
 * the base skill: the big number displayed in-game. Used for shuttle missions.
 * the proficiency, sometimes called RNG roll (random number generator): the interval displayed in-game between parentheses after the base skill. Used for away missions together with base skill. Whenever applicable, a random number is chosen from the interval uniformly and independently.

Skills can be used to make generalized comparisons between crew members, for example, Picard is a stronger diplomat than Torres.

Skills, along with Traits, are used to decide the outcomes of challenges in Missions.